Reinforced-concrete railway-sleeper with special fixing device.



` B. SANI.

REINFORGED CONCRETE RAILWAY SLEEPERKWITH SPECIAL FIXING- DEVICE.

APYLIOATIGN ULEB FEB. 15,"19ov. 9291 Patented my 20, 1909.

2 SHEETS-SHBBT 1. l

B. SANI.l TE RAILWAY SLEEIER WITH SPBGIAL ,FIXING DEVICE,

RBINPORGED @ONORE APPLICATION FILED FEB. 15, 1907.

' f Patented July 20, -w09.

, I @mmf/W the longitudinal irons. vtions are placed in the inold iirst et' all BONAVENTURA SANI,

or none, iTaLY.

REINFORCED-CNCRETE RALWAY-SLEEPER WIV'LIH SPEGXAL FIXING DEVICE.

Specification of Letters Patent.

Patented July 20, 1909.

Application filed February 1.5,i1907- Sera1`No. 357,431.

To all/whom it may concern.'

Be it known that Lloxiivnn'riatv Sam, subject' ot' the King ot Italy, residing at ,Boing Italy, have invented certain new and useful Improvements in Reinforced (loncrete Railway-Sleepers Vwith Special Fixing Devices, of which the following is a specification.

My present invention has for its object to provide a new and improved reinforced concrete railway sleeper with a special fixing device., shown in the annexed drawings where- Figure l is a Vertical longitudinal scction, Fig. 2 a horizontal longitudinal section, Fig. 3 a cross section of the-rein-y forced concrete sleeper, and Figfet a plan View of helical wire winding, while F ig. 5 is an' elevation of anotherforin oi winding, Fig. (i a plan, and Fig. 7 a cross section ot the tie. Fig. 8 is an elevation ot' one forni of socket, Fig'. a plan View, and Fig. l() a plan of another forni of socket. Figs. 1l and 12 are an elevation and a plan view, respectively, of one clement ot my new inetal reinforcement; for concrete sleepers.

My said nietal reinforcement conipiV-ises three longitudinal rows l, 2, 3 ot iron bars or Wires between which two rows of S- shaped wires are placed. My said concrete sleepers are niade with the aid of wood molds into which a layer ot concrete thon oughly mixed with sand is filled in whereupon a first row or series ol metal bai-sor wires, generally five, are placed in the con crete layer, connected together by ten trans verse wires. A fresh layer ot concrete is then filled in, and thereupon a second series of wires placed in position, and then a third layer of concrete, a third series ot wires and a fourth layer of concrete.

My improved sleeper is roughly trapeL/.c Shaped and provided at its ends with rail fixing devices.

The special rail fixing device according to my present invention comprises two intcgral lengths 7 and 8 of galvano plated wire helically wound up and connected by an v intermediate straight length 9 and having two ends l() and 11 bent so as to embrace The said connec- 'and held in place by two perforated boards suitably Atixed'tol the traine according to the usual railway inode] so that the finished.

sleeper will have recesses and holes T and 8 tor screw bolts and hooks placed at intervals according to the model 'Vl adopted. i ne helical winding `Forms the 'female threadnr;`

t'or/ the screw boltV designed to `liv the rail placed'in position on the sleeper. Besides the connections with two holes 7 and ltu at' each side two more connections must be proviiied for each pair ot rails. having three pairs ot holes 7. and l2 (Fig. l) on cach sido 'tor the joints.

ln order to 'facilitate moving,r and positioning the ,sleepers they have two transverse side for the joints.l

Histo thc material ot the sleeper good results have been obtained by using slow bindingconcrete and mixing washed sand and simili silicio or volcanic stones, basalts etcfthcrewitli.

' For main railway lilies with a great nuniber ot heavy cars running on them very good results have been obtained hy inserting;` wire joints embracing the wires or bars l ol the lower row to wires il ot thc upper row or,' alternatively, those ot the lower row to those ot the intermediate one 2, or those ot the latter to those of the upper one. The wire gauze pieces 14 and lf3 to be inserted depends obviously upon the resistance the slcepeI is designed to afiord. The upper and intermediate wire ganzes, if such are used, must be. cnt so as to correspond to the female threads or holes for the rail fixing screw bolts.

The niain 4t'eatui'e ot my present improved railway sleeper is the special rail fixing device securing precise gage and absolute sta bility of track. The construction ot the said device is shown in Figs. 5 and G which are respectively a 'front and plan view where l() and ll are the ends, 7 and `8 the helical windings and 9 the horizontal length of wire. My improved sleeper may also be so as to'bc used with the screw bolts according' to n iy invention. Villien desired to use my 'invention with metal reintorceinents having rcctangularor square sectioned hooks, for the above described teniale screw winding a stamped or otherwise produced metal socket l1', lfigs. S, 9 and 'l0 surrounding the fixing bolt or hook may be substituted, which may be of rectangular or square cross section, and is'open in loi'igitudinal direction, as shown at 18, and has at the bottom four extensions 19 in diagonal direction of section, Fig. 9, or normal, Fig. 10.

Fig. l2 is a plan View showing the way in which sockets l? are flistanced and positioned in the sleeper, a plate being indicated dotted lines.

2O in lF ig. ll shows the plate, Q1 the rail. A wire embraces with one or more coils socketr 1T toward its hook shaped extended end. At the lower part another wire Z3 is wound on both et' them and on itsell in the intermediatelength. Bolt Q4 is like those used but has` a rectangular groove to receive a pin or key 26 completing the con nection device, and inserted into rectangular vholes provided in the sleeper.

by Letters Patent of the United States of America isrl. A netal-reinforced concrete yrailway sleeper composed of concrete containing rows of longitudinal-wires connected'by rows of transverse Wires, the concrete having embedded therein elongated helical wire windings forming threaded sockets for engagement with clamping bolts, the helical windings being connected across the sleeper.

2. A metal -.reinforced concrete railway sleeper composed of concrete containing rows of longitudinal wires connected by rows of transverse wires, the concrete having embedded therein elongated helical wire windings forming threaded sockets'for engagement with clamping bolts, the helical windings being connected across the sleeper, and

' also connected withthe longitudinal wires.

A metal-reinforced concrete railway sleeper' composed of concrete containing rows of longitudinal wires connected by rows,` of transverse wires, the concrete having socket portions, and wires embedded in the concrete and having elongated. helical windings 10'- Y cated in the socketsforming threaded sockets for the attachment of threadedfbo'lts. In testimony whereof I have allXed kmy signature in presence'of two witnesses.` BONAVENTURA SA Y 1Witnesses A A. RAGGI. Dnimo NARDONI. 

